Process and mechanism of arable land change in Hebei Province during the past 50 years

1 Introduction Arable land is the core of land resources and its dynamic change seriously affects regional sustainable development. Hebei Province, with a large population, is an agricultural province. With the highspeed economic development, population growth and urbanization, a great amount of arable land has been lost and the land shortage has become more serious. Therefore, arable land change and its driving forces should be studied in order to realize the sustainable agricultural develo…     

中国地质大学美术专业简介

1　艺术设计专业 (环境艺术设计方向 )四年制本科。培养系统掌握艺术设计基本原理 ,知识面宽、综合素质强 ,具有创新思维及一定实践能力和创业精神 ,能独立担任环境艺术设计、室内设计的专门人才。毕业生可广泛在企事业单位 ,尤其是在建筑业、室内装饰业、环境艺术、园林等部门 ,从事理论研究、综合管理和项目设计等工作。2　艺术设计专业 (资讯艺术设计方向 )四年制本科。是艺术设计专业的一个最新的专业方向。培养具有创新的艺术思维能力 ,综合扎实的艺术设计素质 ,以计算机高新科技为辅助手段 ,与网络技术相衔接 ,掌握信息技术和艺术设计…     

《岩矿测试》投稿简则

《岩矿测试》杂志由中国地质学会岩矿测试专业委员会和国家地质实验测试中心共同主办 ,各省地勘局中心实验室协办 ,是反映分析测试技术的专业性科技期刊 (ＩＳＳＮ 0 2 54- 5357,ＣＯＤＥＮ码ＹＡＣＥＤＪ ,国内统一刊号ＣＮ 1 1 - 2 1 31 /ＴＤ)。主要报道国内与岩矿测试及分析科学相关的新技术、新方法、新理论和新设备等研究成果、动态、展望和评述以及有关实践经验 ,突出服务于地质科学和地质找矿事业 ,促进岩矿测试技术的发展。1　栏目及字数本刊设有研究报告及简报、实验技术与装置、综述、分析仪器研制、分析技术开发、新知识新技术…     

地表复杂地区煤田地震勘探方法及效果

以宁夏、山东的煤矿地震勘探为例,介绍了复杂地表工区地震勘探的方法与地质效果。     

《西北地质》征稿简则

(2 0 0 1年 2月修订 )《西北地质》主要报道西北地区地质大调查中涉及造山带地质、资源地质、水文地质与环境地质、数字地质方面的创新性研究成果 ,反映中国地质调查局西北地区地调项目管理、工作动态及地调最新进展。欢迎并优先发表由国家、省部委重大科技项目及基金资助的有关该区造山带地质研究成果。同时 ,也报道地调学术活动、学术思想的讨论与争鸣。1　来稿要求和注意事项1 .1　来稿要求论点明确 ,逻辑严密 ,文字精练 ,数据可靠。每篇论文必须包括题目、作者姓名、作者单位及邮政编码、中英文摘要和关键词 (3～ 5个 )、正文、参考文献…     

TAKING INTO ACCOUNT THE EFFECT OF SECONDARY FLOWS IN DEPTH AVERAGED MORPHODYNAMIC SIMULATIONS

1 INTRODUCTIONThe numerical simulation of morphological changes in rivers, estuaries and coastal areas is because ofits econondcal merit an outstanding scientific task. The comPlexity of the problem is connected with theheterogeneity of the sediment material, an adequate rePresentation of the involved hydrOdynndc stressesand the large comPutational effort fOr long term simulations.Although the aPpllcation of three dimensional models tO engineering problems is increasing and wellvalldate…     

ON THE NUMBER OF FRACTIONS TO COMPUTE TRANSPORT OF SEDIMENT MIXTURES

1 INTRODUCTIONMany hydro-momhological mathematical models neglect the innuence of river bed maerialheterogeneity and its time and space changes during transport and related erosion/dePosition processes. Inthese models a rePresentative diameter of the river bed grain-size distribution (for examPle d5o) isspecified as initial data in each comPutational point of the modeled domain. Different d5o can be assignedto each ghd point but temPoral changes in bed material gradation cannot be simula…     

HYDROPOWER RESOURCES IN UPPER YANGTZE

ＨＹＤＲＯＰＯＷＥＲＲＥＳＯＵＲＣＥＳＩＮＵＰＰＥＲＹＡＮＧＴＺＥＣＨＥＮＪｉｓｈｅｎｇ（ＤｉｒｅｃｔｏｒＥｍｅｒｉｔｕｓ，ＹａｎｇｔｚｅＲｉｖｅｒＳｃｉｅｎｔｉｆｉｃＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅ（ＹＲＳＲＩ），２３ＨｕａｎｇｐｕＲｏａｄ，Ｗｕ...     

EVOLUTIONAL CHARACTERISTICS OF HYPER－CONCENTRATED FLOW IN BRAIDED CHANNEL OF THE YELLOW RIVER

ＥＶＯＬＵＴＩＯＮＡＬＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＨＹＰＥＲ－ＣＯＮＣＥＮＴＲＡＴＥＤＦＬＯＷＩＮＢＲＡＩＤＥＤＣＨＡＮＮＥＬＯＦＴＨＥＹＥＬＬＯＷＲＩＶＥＲ￥ＱＩＰｕ；ＬＩＷｅｎｘｕｅ（Ｓｅｎｉｏｒｅｎｇｉｎｅｅｒ，ＩｎｓｔｉｔｕｔｅｏｆＨｙ...